Mortising machine



0. G. EDMOND monnsme 111101111111 May 8, 1928.

I 3 Sheets-Sheet 2 Filed July 25. 1924 may m i G w 11 swim Fatented May8, 1928.

oscAn GQ DMOND, oFsPoKA-nn, WASHINGTON;

ASSIGNOR or oivn-iiALn T 3 HITE PINE'SASK COMBANY', OFSPOKANEQWASHINGTON. :1

MORTISING aonnvn 1] nea); sled nu' 25,

The machine is designed to simultaneously punch asocket or mortise inthe wood bar, at both sides thereof these mortises or sockets beingadaptedto receive the .tenons of cross intermediate bars When the windowsash is subsequently assembled.

By the utilization of i I y invention, provision is made for a machinewhich is com;

paratively.simple in construction and operation, inexpensive in cost ofmanui'acture rapid in the performance of its functions, reliable, andefiicient. a

The invention consists in certain novel combinations and arrangements ofparts involving a pair oi opposed reciprocating punching dies andltheiroperating mecha nism together with feed andstop mechanism for the woodenbar, and other features fully set forth aswill hereinafter be more andclaimed. p

In the accompanying drawings I have illustrated one complete example ofthe physical embodiment of my inventio'n wherein the parts are combinedand arranged in accordance with the best mode I have thus far devisedfor the practical. application of the principles of my invention."

Figure 1 is a view in elevation at the operators side of a machineembodying my invention. 7 i t Figure 2 is an enlarged detail view; fromtheinner side of the machine showing the actuating mechanism for thereciprocating dies and the feed-stop device.

Figure 2 1s a transverse ,sectional view through the wheel and disk ofFig. 2 for actuating the die mechanism and stop-feed mechanism.

difffltd in this view. that i other I objects chine top l924 glf5eii alivol 728.247.

liigure li is a vertioahtransverse sectional view of the machmelookingoutwardlyat line of Figure l or line 8 of Fig. 5.

I Figuret is a view in elevation at the rear ordeliveryendofthe"machine, as seen from the left in Figure l. p f Figure5' is a top plan view ofthe ma chine. i

Figure verse sectional View at line66 showing the feed chains andadjustingfmeans therefor. Figure 7 is an enlarged detail. transversesectional v ew at'line 7-7 of Fig. 1showing. the reciprocating dies; y

Figure 8 is a perspective view of one of the dies.

Thewvoodenisash bar is shown in cross Figure 7 between thereciprocating' dies, and the two mortises B and G atopposite sides ofthe bar are also in- It will be understood section at A in punched; and.the machine maybe adapted or'adjusted to various sizes ofthese bars orobjects.

In the preferred form of the invention the machine is preferably madeportable" and seltcontaine'd and its frame 1 which is supported onwheels 2, carries an electric motor '3 for 1 actuatingtl1eseveraldevices forming the machine. Adrive shaft 4 is journal ed inbearings 511631 the 'bottomof the machine -frame and is operated fromthe motor shaft 6 by' the pulley 7, belt 8,' and the large drive shaft.f i A A powfer shaft 10 which extendslongitudinally of the machine isjournaled in bearings 5 parallel with and above the drive shaft and isdriven from the latter by drive pinion 6 is an enlarged, vertical,transor articles may be i pulley. 9 whichlatterpulley is carried by the11 and driven gearlB which gear is loose on the powershaft forms part ofa clutch device tof ee-action with a tight 95,

clutclrmem'ber 13 on th'e sha ft. By means ofthe clutclrlever 14:andconnecting link 15, the machine maybe startech'stopped andcontrolledby the operator.

The wood bar A tobe mortised by punching is mechanically conveyed acrossthe maor table'l fifr'om right to left'in Fig.5,1and is entered orintroduced to" the machine on theguide extension 17 under the flatspring arm 18, at the right of the machine. The spring arm is bolted toa longitudinally adjustable block 19 and the slidable block is fixed inposition on the guide flange 20 of a transversely adjustable carriedblock 21 which latter is slidab le in the groove 22 in the top 16.

The wood bar is pushed by hand under the spring arm 18 in between a pairof endless conveyer chains 23 and 2st horizontally disposed above thetop of the machine and adjustable laterally thereof. hese chains travelin opposite directions with their parallel inner and adjoiningflightsspaced apart and moving in the same direction to frictionally grip thewood bar A with a resilient clamping action for the purpose of advancingthe wood bar while it is free to beadvanced. While the bar positivelyheld stationary these chains will continue to move along the sides ofthe wood bar until. after the punching operation when the bar is freedto advance, and then the chains again become operative to advance thewood bar.

The conveyer chains are supported and operated by two pairs of pulleys25 25 and 26 26' fixed to rotate with the respective' verticallydisposed shafts 2T 27 and 2828. The upper ends of all of the shafts arejournaled in top bearing plates 29 which plates form the tops of chainframes or boxes 30 and 30 that support and guide the movements of thechains, above the table 16.

-The chains are driven by their sha ts 27 and 28 and sprocket wheels 25and 26, the shafts as shown in Fig. extending down through the table topand within the interior of the machine frame and provided with bearingbrackets 22 attached to the frame 1. A worm shaft 31 which extendstransversely of the machine and is journ'aled in bearings 32 in theframe 1 is provided with a worm 33 that engages the worm wheel 34 on thepower shaft 10, and gear couples 35 between the worm shaft and the twoshafts 27 28 transmitpower to the latter for operating the chains.

The conveyer chains exert a resilient pressure against the oppositesides of the wood bar A in gripping it and for this purpose chains andchain frames are capable of a slight pivotal movement on their shafts 27and 28 as a center of movement. At a suitable location from the shafts27 and 28 each chain frame is provided with a depending lug 36 whichpasses down through a slot 36' in the top 16. In these threaded lugs arealined bolts 37 having a bearing in the respective brackets 38 dependingfrom the opposite side edges of the table top, and each provided with ahand wheel 39 at its outer end. Between the bearing lug 38 and adjustingnuts 40 on the bolts a coiled spring 4:11 is interposed. By turning thehand wheels the chains andtheir frames may be swung on their pivotalcenters 27 and 28 to vary the relative positions of the chains. By thismeans the resilient pressure of the two chains against-the oppositesides of the wood bar is regulated to insure proper action of the chainsin advancing the woodv bar and to permit the movement of the chainswhile the wood bar is being held stationary for mnching.

As the wood bar A is conveyed by the gripping chains along thelongitudinal center of the machine top or table it passes across the topand partly over an extension 42 of the machine until it encounters astop or detent- 43 that is vertically reciprocable through a slot in theextension'and which will hereinafter be described.

A spring arm 44 disposed in line with the spring arm 18 at thelongitudinal center of the machine bears upon the top surface of theWood bar to hold it in place on the table. This arm is adjusta'bly heldin a bridge bar 45 disposed transversely of the machine and above itstop, and the bridge bar has end collars -16 vertically adjustable on apair of supporting pins 4:7 fixed to the table at opposite sidesthereof.

Then the movement of the wood bar is halted by the stop 43 and the barremains stationary .for a period of'time, the two mortises B and C arepunched in the opposite sides of the wood bar by a pair of dies l8 and49, which act simultaneously.

These oppositely acting dies or punches are each reciproeable through ahead as and 51, and as shown inFigure 8 each die has a shank 52 seatedin a'punch bar 53 that is screw threaded and provided with a nut 54 andcollar 54'.. The collars 54L are slidably supported in perforated lugs5:3,and a coiled spring '56 on each punch bar is interposed between thenuts 5% and heads 50 51, to hold the dies normally in retracted positionand, to "ithdraw them from closed position after the working stroke ofthe dies.

The heads 50 51 and lugs 55 are rigid with their base plates 57, 58(Fig. 7) and these plates are. slidably adjustable in the grooved,horizontal, transverse guide plate 59. These base plates also havevertically disposed plates or flanges 57 and 58 that are guided in thegrooved plate 59. For longitudinally moving the dies and their carriagesin order to adjust the carriages and diesat opposite sides of thelongitudina lcenter of the machine and at opposite sides of the wood barI utilize a Wheel 60 and a right-and-left screw-bar 61 threaded in lugs62 of the respective flanges 57' and 58 best seen in Fig. 4.

The dies are adjustable in their heads 50 51, byturning the nuts 54 onthe punch bars toward or away from the longitudinal center of themachine to decrease or increase the punching movcinentof thedies 18. Thesupports 57 and 58 for the dies-are also ad jiistahle transversely "ofthe turning tl'iehand wheel (it);

The two dies are simultaneously pushed inwardly to punch aniortise inthe wood bar hyincans of push bars (33 and (S-l which pm jectnyjiwardlythrough slots (35 of the plates S'T arnllfih and their ends are adaptedto engage the outer ends of the p'ushhars.

The push bars are. each pivoted at G8 to one of the iianges? 5S andnearth ir lower ends thesehars are joined hj-"a sp v 67 which normallyholds-their upper free i uds out against a stop bolt (58 in athreadedlug (39 at each side of the machine and locatcd at the outer ends of theplates 57 and At their lower ends thcse vertically disposed push barsare joined by pivoted links {Oiind '71 disposed at en'angle to theirbars nnd'pivotally joined together and carryin at the r joint a roller72. The. pivoted'push hars and their links thus forni a toggle framewhich when actuated will serve to push inwardly the two dies and theirpunch The toggle frame is iictuatcd. iemla flangediwl'ieel 73 carried onthe end ofthe power "shaft 10 and equippedwith a laterally The linkprojecting. roller and pinat Tel; is located in the path of movement ofthis rollerfas it revolves with the flanged wheel and the rollercontacts at the lower edge of the link and rides thereon as'it lifts thelink. The lifting of the link tends; to spread the toggle frame andswing inwardly the upper free ends oi? the "puslrhars to ma he theworking stroke of the reciprocating dies. After the roller 74; passesiiis'highest point of travel. it descends and permits the s iirings and6'?" to retract the diesand hen the toggle 'Iraine hack to inopcratiyeor closed position.

The toggle iranie ment by means of a vertical, h plate 75, attached tothe machineframennd ilio irniing a vertical guide way for thcroller Aiiiter the dies have punched the lnortises is guided in its more and havebeen withdrawn therefrom the stop ordetent 4-3- is withdrawn froni itsnormal elevated position "for passe e of the punchec orinorl'ised woodbar A a. it is advanced by the conveyor chains. The ha r thui-i pushedalong the waybetwcen theguidc rails 76 and 77 of the extension 42, as best se'en in Figure I y The stop 43; which is normally held in elevatedposition by a spring 43 as shown in Fig. 4, is withdrawn or lowered forpassage of the wood bar is actuated by a double rock-arm 78 on the rockshaft '78 journaled at the underside of the extension. 42 and machine 5by i drawing in; (ii

seenlin Fl with and cerves the "row '01: r and by turning said he roovedguide disposed" longitudinally [ofthe machine-int onesideofjitscenterfzindto which arm the spring 43 is connected. connecting rod '75)is'pivotcd on one end ofthis rock arm and at'it's lower eiidit-herod isconnected to a lift lever 80, which latter leveris pivotedat 81 asset-nin Fig, l. The freeend of thehft lever elevated by contact therewitl'roi? a laterally projecting pin 82 carried by a flanged wheel 72 issecured on the cndof tl'ie powersliait 10 by'a central screw or 'hoitSG. Bythis arrangement of the dish andwvli eel the latter may be turnedto secure the propcijrelattire distance hetween the pin 82 of the detent-opera-ting" device andpiin i 'flfolfithe' dieopcralting inech'anisnnand after the screw 86 has been tiohtened the disk 7 \D and f wheel willcooperate at predetermined periods-for punching thefwood herand with iattachment for the 12 1 "rocatingfidics the end of the machine frame and wh ich at tac'hnient c ar ri e's' the toggle iraine; may he -=vertically adjusted by means of the hand whcelST andscrew bar 88, which heris ,supported in the threaded lnn'izonial lughi) on the machine frame as4.. "A threaded yoke integral "ejected 'froin' the plate 59 retheattaol'iinentmay be moved relatively (and in a vertical plane) lo themachine 'i'ra'nie l. v v i The wood bars are fed from right'lc 'lcjil:

in Figure longitnd'inall of the machine,

thecohreycr chains ,qrippii g onc hnr to push the wee lingbaragainst thestop 43 and in this posiion the first bar is retained while the diesrecipr' cate. Then the detent or stop 4.3 is witlnlrawn and thecontinuously inoringchains becon'ic eilective to again pushfthc woodhair through the machine to discharge the 'inortised har and resen't theEiollowing bar to the detent 43,, which returnsto operative position,after being withdrawn "for passageof a completed her. The feed chainsare adapted "to *assert resilient pressure against the sides of thc'bnrsmarine width of the bars may vary within limits ai dyet beheld bythe'chains with sufiici'ent friction to feed the bars." The dies may beadjusted to punch bars of varying widthsranclthe dies may be adjusted tovary the length of their working strokes,to increase or diminish thedepth of the mortise. The die supporting mechanism may be adjustedvertically to raise or lower the dies with relation to the wood bar forpunching, and of course various forms or shapes of dies 48 may be used.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent is- 1. The combination in a mortisingmachine of a work-feed mechanism comprising a table and spaced resilientmeans for holding the work to the table, a pair of endless, constantlymoving feed chains, a detent in the path of movement of the work, meansfor exerting a resilient presure of said chains at opposite sides of thework, and means for retracting the detent after the iortising operationto permit passage of the work.

2. The combination with a pair of spaced, endless, constantly movingfeed chains and means for exerting a resilient pressure of said chainsat opposite sides of the work, a detent normally in the path of movementof the work and means for retracting said detent for the passage of thework and for restoring said detent after the passage of the work. r

3. The combination with a pair of spaced endless chains, supportingshafts and wheels therefor, of a supporting frame for a pair of shaftsat one end of the chains, means for (having the shafts at the other endsof the chains, and means co-acting with said frames for exerting aresilient pressure on work between said chains.

el. The combination with a pair of spaced endlesschains, a pair ofsupporting shafts and pulleys for each chain and a frame for each chainand its shafts, means for driving the shafts at one end of the chains,means for laterally adjusting the frames and chains, and means co-actingwith the adjusting means for exerting a resilient pressure on workbetween the chains.

5. The combination with a pair of spaced endless chains and framestherefor, a pair of pulleys in each frame for supporting the chains andshafts for said pulleys, of means for operating the shafts at one end ofthe chains, screw device connected to each frame for lateral adjustmentthereof, and a spring co-acting with each screw device for exerting aresilient pressure on work between said chains.

6. The combination with a pair of adjustable cross plates each having ahead and spaced lug, of a nut slidable in each lug and provided with acollar, a punch bar threaded in each nut and a die in each barreciprocable in a head, a retracting spring interposed between eachcollar and lug, and means for actuating said bars for an operatingstroke of the dies.

1,eee,"191

7. In a mortising machine the combination with a pair of opposedreciprocable dies of operating mechanism therefor comprising a pair ofspaced pivoted push bars and pivoted angularly disposed links connectedto said bars forming a toggle frame, and a rotary member carrying acontact device for intermittent co-action with said frame.

8. In a mortising machine the combina tion with a pair of reciprocabledies and a toggle frame operatively connected therewith for actuatingthe dies, of a guide roller on said frame and a guide plate therefor,and a rotary disk having a laterally projecting contact member thereonfor 00-210- tion with a portion of the frame. 7

9. In a mortising machine the combination with a pair of reciprocabledies of operating mechanism therefor comprising a pair of spaced pivotedpush bars and a spring connecting said bars, a pair of pivoted angularlydisposed links pivoted at the ends of said bars and a guide roller atthe pivotal connectionbetween said links, a fixed guide plate for saidroller, a rotary wheel, and a I contact pin on said wheel adapted tocoactwith an edge of one of said links.

10. In a mortising machine the combination with a feed mechanism, amortising de' vice and a stop device, a power shaft and transmissionsupports between said shaft and feed mechanism, a driving member carriedby the shaft and operative connections therei from to said mortisingdevice, a driving member on the shaft and operating connectionstherefrom to the stop device, and means for relatively adjusting saiddriving members relatively to said shaft.

11. The combination in a mortising machine with a feed mechanism, amortising device and a stop device of a power shaft andtransmission.supports therefrom to the feed mechanism, a flanged wheelcarried by the shaft and operative connections therefrom to themortising device, a slotted disk within the wheel and fixed to saidshaft and a pin on the wheel co-acting with said disk, operatingconnections between the disk and stop device, and means for relativelyadjusting the disk and wheel on said shaft.

12. The combination in a mortising machine with a detent and means fornor-i mally holding said detent in operative position, a rock shaft andconnections therefrom to said detent, a rotary actuating member and apin thereon, a pivoted lift lever in the path of movement of said pin, acrank arm on the rock shaftand a link connecting said arm and lever.

In testimony whereof I affix my signature.

OSCAR G. EDMOND.

